# FM BUGGER CIRCUIT PDF

FM BUGGER Project Doc – Free download as Word Doc .doc /.docx), PDF File . pdf), Text File .txt) or read online for free. FM bugger. FM Transmitter Circuit. A. PROJECT REPORT ON FM BUGGER. ABSTRACT. FM Transmitter is a device which generates frequency modulated signal. It is one element of a radio. Aug 3, Schematics Embedded. Embedded Client cannot be loaded. Minimum window size is x Current size isx Open in Editor.

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While the instructions for a project say to use, “25cm length of 25SWG wire. Wrap the wire around a cylindrical object of 6mm diameter and take it out after eight turns. Additionally, is there a general rule such as 0. The inductor wound with 0. Not a trvial amount. Increasing inductor length using same amount of turns wider copper results in reduced inductance Inductance inversely proportional to Length.

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One could try using 9 turns of the larger diameter wire, attempting to get inductance back to normal. Inductance is proportional to the number of turns squared. I have kept it simple here. Of course for 8 turns one uses 9 times the copper diameters for coil length.

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And obviously the “perfect” winding with no space between turns. It doesn’t often turn out this simple to change turns to accommodate change in copper width coil length.

Just fortunate that one additional turn in this case can restore original inductance. Accurately calculating the inductance of a coil is not as easy as you might think, particularly if it is short. For 8 turns of 0. Now the critical question: The answer depends on what tolerance is acceptable in the particular circuit. In this FM ‘bugger’ project the coil is fk of a tuned circuit which determines the operating frequency.

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The other part is a 50pF variable capacitor which is used to tune the transmitter to a frequency somewhere in the MHz FM broadcast band. The resonant frequency of a tuned circuit is inversely proportional to the square root of its inductance.

This halves the effect of inductance variation. If you are not concerned about covering the entire FM broadcast band then this difference may indeed be ‘neglectable’. Buggrr the variable capacitor may be able to tune a wider range than necessary, so the slightly lower inductance could possibly be ‘tuned out’ to still cover the full FM broadcast range.

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Home Questions Tags Users Unanswered. Will an inductor wound using wire of 0. Marla 3, 1 11 Adam Uraynar 1 2 Wow, how old are these instructions? But in general, wire thickness usually only affects its ampacity, not its magnetic properties. I edited the title, to show that an inductor is being “wound”, not just the inductance of the wire. Why not use 24AWG wire?

Adam, I appreciate the vote of confidence.